Car underframe



c. J. w. cLAsEN ET AL 1,801,332

C AR UNDERFRAME Filed Jan. 16, 1930 2 Sheets-Sheet l April 21,1931.

BY Pwowhw M 64I-M o We 51a ATTORNEYS April 21, 1931. c. .1. w. cLAsEN ETAl.

CAR UNDERFRAME Filed Jan. 16, 1930 2 Sheets-Sheet 2 INVENTORS Caen ,wwwBY y W VWM 9 Mc,

ATTORNEYS Patented .Apta 21, 1931 UNITED STATES.

PATENT OFFICE CLAUS J. WER-NER GLASEN AND FRANK W- LEWIS, F DAVENBORT.IOWA, ASSIGNOBS ro THE :enrrnnnonr cotisant?, or nnrrnnnonr, Iowa, .eooaronnrion or iowaV CAR. UNDEBFRAME Application ledJanuary 16, 1930.

This Vinventionrelates to the construction of railway car underframesbetween the center sills and bodyvbolsters adjacent the ends of the car,andrmore particularly tocar underframes designed for draft gear of thetwo key horizontal yoke type in which the inner end of the shaft gear isquite close to the body bolster.

The present invention has for an object to provide a joint between thebodyT bolster and center sill which has a reinforcing plate whichextends outwardly beneath the lspaced draft arms and which Ais providedwith a portion extending across the space between the arms which forms adraft gear support. A further object is to provide a bearing plateattached to the center sill and inten `posed between the truck and bodybolsters which is so formed as to provide a draft gear support.

In the construction of car underframes, lonly a limited space for theunderframe is available between the truck bolster and the car floor.When a one piece body bolster is ,35 employed, it commonly extendsthrough a recess on the under side of the center sill with the bottom ofthe body bolster substantially flush with the bottom of the center silland asuitable bearing is interposed between the body and truck holsters.

Y y 0n account of the recess in the under side of the sill to receivethe body bolster, buiiing forces or end shocks due to the operation ofthe cars are exerted on a line well below the l' :l5 neutral aXisof thatportion of the sill over the bolster recess and in many instances are onaline passing directly through this recess. These buiiing forces set upbending stresses in the portion of the sill over the recess 5.0 which,after repeated buifng shocks, will dis- Serial N0. 421,157.

side of the body bolster, the strut plate being of sufficient strengthto materially lower the neutralaxis of the sill so as to resist bendingstrains due to the bufhng forces and the vertically imposed load on thesill.

The object of the present invention is to adapt the invention disclosedin the aforesaid copending application to car underframes designed fordraft gear of the two key horizontal yoke type in which the inner end"of the draft bolster.

Stated more specifically, the present invention has for one of itsobjects to provide a gear is quite close to the body strut plate whicheffectively reinforces theV gether with such variations andmodifications thereof vas will be apparent to one skilled in the art towhich the invention appertains.

Reference should be had to the accompanying drawings forming a part ofthis specification in which:

Figure 1 is a fragmentary plan view showing -a portion of the steelunderframe of a railway car.

Fig. 2 is a section taken on the line indicated at 2-2 in Fig. 1.

Fig. 3 is a section taken on the line indicated at 3,-.3 in Fig. 1.

Fig. 4 is a section taken on the line indi cated at 4.-.-4 in Fig. 1.

Fig. 5 is a section taken on the line indicated at 5 5 in Fig. 3.

Fig. 6 is a plan view of the strut plate.

Referring to the accompanying drawing, the car underframe comprises acenter sill 1 which may be of the single or double type being hereinshown for purposes of illustration as an Ifbeam and side sills 2 whichare connected near the ends of the vframe by body holsters 3 and alongthe length of the frame by tie beams 4, only one body bolster and tie'beam being shown in Fig. 1, which shows Vmember indicated at 7.

'The Vextensions when formed separately from the body portion of thesill are provided with attaching portions 8 which lit upon the oppositesides of the body portion of VtheV center sill and are attached to theends of the body Vportion of the sill immediately tothe inner side ofthe body bolster, each ex- 25,

tension being provided with a recessy 9 on. the underside thereof whichis of a width and depth to receive thevbody bolster 3 with the bottom ofthe body bolster substantially flush lof the bottoms of the extensions.

The extensions 5 are preferably in the form of castings with integralwebs 10 and 11 across the sides and top ofthe bolster recess forengagement with the sides and top of thevbolster. A reinforcing orbearing plate 12 is rigidly secured to the bottoms of theextensions andto the body portion of the sill and extends across the open lower end ofthe bolster recess 9. The plate 12 may be interposed between the carunvderframes and ya truck bolster13' to serve as an intermediate bearingmember, in' which vcase it is provided ywith a central annular bearingportionv 14 which rests in an annular'groove in the top face of thetruckbolster formed by an'oute'r annular Vrib 15 and a central boss 16concentric with the rib 15. The truck bolster is Vprovided with acentery pin aperture 17 vided' with a central portion 18 forming arecess to receive the rib '16 ofthe truck bolster,

the recessed portion 18 being provided with an aperture 2O whichregisters with the aper- `The annular an annular .channel inthe top-faceof the 22 and 23, the ribs 22 extending radially `across the channel andthe ribs 23 reinforcing the outer portion of the channel.

Theheight of the reinforcing ribs 22 and 23 is less than the depth ofthe channel and thecentral portion 18 Afits'in a recess in the 'bottomlof the body bolster, the bodyk bolster and' the sill extension above thebody bolster being providedl with center pin apertures 24 and 25 whichare axially alined with each other and with the apertures 17 and 20 ofthe truck bolster and strut plate.

'llhe plate 12 is preferably so formed as to strengthen the underframeat the joint between the center and body bolster and is referably formedfrom the center thereo to the outer end of a width in excess of that ofthe body portion of the sill and substantially equal to the width of theend portion formed by the spaced draft arms between which the draft gearis mounted. The inner end of the strut plate tapers from thecentralportion and extends a substantial distance along the under sideof the body portionrof the center sill to which it is riveted orotherwise secured inwardly of the body bolster. The plate 12 may beriveted or otherwise secured to the body bolster on opposite sides ofthe center sill and extends outwardlybeneath the draft arms beingriveted or otherwise secured to the bottom of the extensions and draftarms outwardly of the body bolster. The plate may be stiffened by shortdepending flanges 28 extending substantially the full length thereofalong opposite sideedges. rIhe plate 12 extends considerably pastthe'inner ends of the draft arms 6 and has a recess `29 centrally of itsouter end to accommodate. the draft gear adjacent the inner ends of thearms 6.

The outwardly extending side portions of the plate on opposite sides ofthe recess 29 which are attached to the under sides of the draft. armsare connected by-` an integral transverse web 30 which extends acrossthe space between the inner ends of the arm to provide a draft gearsupport, the transverse draft gear supporting web being at the properheight for supporting the draftgear and being reinforced by dependingedge flanges 31 so that it provides a rigid support for the draft gear.

Itis to be understood that in some embodi ments of the' invention, theprimary function of the combined joint and draft gear supporting platemay 'be' asa bearing or center 'plate between the body and truckbolster,

through the lOOSS 1.6 and the Plate 12' is PrO-.while in otherembodiments, the primary function ofthe plate may be as a strengtheningor strut plate sti-'e'ning the sill at the joint between the sill andbody bolsterlor vthe plate maybe a combined strut and vcenterplate, theplate in all cases beinglprovided with an integral draft gear supportingpor- Y i Htion. lplate andv this channel is reinforced by ribs lt willbe apparentfthat the present invention provides a very simple andeconomical construction at thejoint between the center sill truckbolsterv and body bolster by means of a strut plate whichfserve's notyonly tovpro-f Avide the necessary strength inthe center sill to preventdistortion under buHing stresses, but also 'provides a draft gearsupport?` t Furthermore, it is to be'understood thatv the particularform of apparatus shown and de- 1930 fee 'spaced draft arms at an endthereof, a body bolster extending across the sill adjacent the innerendsof the draft arms, a truck bolster `beneath the body bolster, and aplate rigidly att-ached to the sill and interposed between `saidholsters, said plate extending outwardly beneath said arms and having adraft gea-r supporting portion extending across the space between saidarms.

2. In a car underframe, a center sill having spaced draft arms at an endthereof, a body bolster extending across the sill adjacent the innerends of the draft arms, a truck bolster beneath the body bolster, and aplate interposed between said holsters` and extending outwardly beneaththe draft arms, said plate being rigidly secured to the under side ofsaid arms and having aI draft gear supporting portion extending acrossthe space between said arms.

In a car underframe, a center sill having spaced draft arms at an endthereof, a body bolster extending across the sill adjacent the innerends of the draft arms, a truclr bolster beneath the body bolster, and apla-te interposed between the holsters and attached to the sill and bodybolster, said plate extend- Y ing outwardly beneath the draft arms andhaving a draft gear supporting portion extending across the spacebetween said arms.

4f.. In a car underframe, a center sill having spaced draft arms at anend thereof, a body bolster extending across the sill adj acent theinner ends of the draft arms, a truck bolster beneath the body bolster,and a plate rigidly attached to the sill and interposed between saidholsters, said plate extending outwardly beneath said arms and havingspaced portions rigidly attached to the under sides of the arms, saidplate having a transverse web connecting said spaced rigidly attachedportions and forming a draft gear support.

5. In a car underframe, a center sill having spaced draft arms at an endthereof, a body bolster extending across the sill adjacent the innerends of the draft arms, a truck bolster beneath the body bolster, and aplate rigidly attached to the sill and interposed between said holsters,said plate extending outwardly beneath said arms and having spacedportions rigidly attached to the under sides of the arms, said platehaving a transverse web connecting said space-d rigidly attachedportions and forming a draft gear support, said web having reinforcingflanges along the edges thereof.

V6. In a car underframe, a body bolster, a center sill having spaceddraft arms at an end thereof, said sill having a recess upon theunderside thereof of a width and depth to receive the body bolster', anda plate rigf idly secured to the under side of the sill and extendingacross said recess, said plate cxtending outwardly beneath said draftarms and rigidly attached to the draft arms, said plate having a draftgear supporting portion extending across the space between said draftarms.

7. In a car underframe, a body bolster, a center sill having spaceddraft arms at an end thereof, said sill having a recess upon the underside thereof of a width and depth to receive the body bolster', and aplate extending across the recess beneath the bolster and secured to thesill inwardly of the recess and to the body bolster at opposite sides ofthe sill, said plate extending outwardly beneath said draft arms andhaving draft gear supporting portion extending across the space betweenthe arms.

8. In a car underframe, a body bolster, a

center sill having spaced draft arms at an end thereof, said sill havinga recess upon the under side thereof of a width and depth to receive thebody bolster, and a plate extending across the recess beneath thebolster and secured to the sill inwardly of the recess, and to the bodybolster at opposite sides of the sill, said plate having laterallyspaced portions extending outwardly beneath the draft arms and rigidlyattached thereto, said plate having a connecting web joining saidattached portions and forming a draft gear support.

9. In a car underframe, a body bolster, a center sill whichhas spaceddraft arms at an end thereof, said sill having a recess on the underside thereof of a width and depth to receive the body bolster, and anelongated `plate rigidly attached to the bottom of the sill forwardlyand rearwardly of the recess, said plate extending beneath the innerends `of the draft arms and having a draft gear support formedintegrally therewith and extending across the spa-ce4 between said arms.

l0. In a car nnderframe, a body bolster, a center sill which has spaceddraft arms at an end thereof, said end portion having a recess on theunder side thereof of a width and 'attached end portions and forming adraft gear support.

11. In a car underframe, a body bolster, a center sill having spaceddraft arms at an hill loo

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end thereof, and a recess'across the underside thereof adjacent theinner e-nds of said arms of a width and Vdepth to receive the bodybolster, and a strut plate of a width materially greater than that ofthe sill, extending across the bottom of said recess and secured to thebody bolster' on opposite sides of the sill, said plate having anelongated tapering inner end portion rigidly attached tothe bottom ofthe sill inwardly of the body vbolster and having its opposite endrigidly attached to the bottoms of the draft arms, said plate having aportion extending across the space between the arms and forming a draftgear support.

12. In a car underframe, a body bolster, a center sill havingspacedrdraft arms at an end thereof'and a recess on the under sidethereof of a width and depth toreceive the body bolster, and anelongated strut plate rigidly attached to the bottom of the sillinwardly and outwardly of the recess, said plate extending beneath theinner ends of the draft arms and having` a draft gear support formedintegrally therewith and extending across the space between said arms,said plate having reinforcing flanges extending along the opposite sideedges thereof.

13. In a Car underframe, a body bolster, a Vcenter sill having spaceddraft arms at an end thereof and a recess across the underside thereofadjacent the inner ends of said arms of a widthv and depth to receivethe body bolster, and a plate of a width materially greater than that ofthe sill,eXtending across the bottom of said recess and secured to thebody bolster on opposite sides of the sill, said plate having anelongatedl a center sill having spaced draft arms at an end thereof anda recess across the undersi-de thereof adjacent the inner ends ofthearms of a width and depth to receive the body bolster, a truck bolsterbeneath the body bolster, and a plate of a width materially greater thanthe width ofthe sill extending across the recess and attached to thebody bolster at oppositesides of the sill, said plate having a bearingportion engaging the truck n' bolster and an elongated tapering vendportion secured to the sill along the under si'de thereof inwardly ofthe recess, said plate having its opposite end portion extendingoutwardly beneath the draft arms and providedv with a draftv gearsupporting portion eX- tending across the space betweensaid arms.

16. In a car underframe having a draft gear, a center plate providedwith a forward extension to support the rear end of j tures.

CLAUS Jr WERNER GLASEN. FRANK W. LEWIS.,

tapering end portion rigidly attached to the bottom of the sill inwardlyofthe body bolster and having its opposite end extendingoutwardly. ofthe recess and rigidly attached to the bottoms of the draft arms, saidplate having a webI extending'transversely across the space between thearms and forming a kdraft gear support, said web having reinforcingflanges along the edges thereof. le, In a car underframe, a bodybolster, a center sill having spaced draft arms at an end thereof and ayrecess across the underside V thereof adjacent the inner ends of thearms of a width and depth toy receive the` body bolv j plate having anelongated-end portion rig- Vso idly secured to the sill `along the underside thereof inwardlyof'the recess and its opposite end portionextending outwardly beneath the draft `arms and rigidly secured thereto,said plate having a draft gear sup! porting portion extending across thespace between saidy draftarms. v Y y 15. In a car underframe, a bodybolster,

